Thermostat



FIG. 1 is a front and right side perspective view of a first embodiment of a thermostat;

FIG. 2 is a front elevation view of the thermostat shown in FIG. 1;

FIG. 3 is a right elevation view of the thermostat shown in FIG. 1, the opposite left side being a mirror image thereof;

FIG. 4 is a front and right side perspective view of a second embodiment of a thermostat;

FIG. 5 is a front elevation view of the thermostat shown in FIG. 4;

FIG. 6 is a front and right side perspective view of a third embodiment of a thermostat; and,

FIG. 7 is a front elevation view of the thermostat shown in FIG. 6.

The views of the thermostat not shown form no part of the claimed design. The details shown in broken lines in the illustrated embodiments depict environmental subject matter only in those embodiments and form no part of the design claimed with respect to those embodiments. 

The ornamental design for a thermostat, as shown and described. 